1) An alternating voltage of 220 V, 50 Hz frequency is applied across a capacitor of capacitance 2 μF. The impedance of the circuit is A) $\frac{\pi}{5000}$ B) $\frac{1000}{\pi}$ C) $500\pi$ D) $\frac{5000}{\pi}$ Answer: Option DExplanation:Impedance of a capacitor is XC = 1/ωC XC = $\frac{1}{2\pi fC}$ = $\frac{1}{2\pi\times50\times2\times10^{-6}}$ = $\frac{5000}{\pi}$
